package com.ny.wlw;

public class Test03 {
    public static void main(String[] args) {
//         父类（父接口）=》子类
        NewTest  newTest = new Zi();
        newTest.test();
        int a =  newTest.add(1,2);
        System.out.println(a);
    }
    // 支付功能
}
